ACSM Certified Exercise Physiologist| 284 questions| with complete solutions

Physical Activity correct answer: Any bodily movement produced by contracting skeletal muscles, with an increase in energy expenditure. Exercise correct answer: Planned, purposeful, repetitive Physical Fitness correct answer: Attributes or characteristics that individuals have achieved that related to their ability to perform physical activity 3 metabolic pathways the body uses to creates ATP correct answer: 1. Creatine Phosphate 2. anaerobic glycolysis 3. 0xidative system Claudication correct answer: pain in the leg is induced by exercise, usually because of an artery obstruction. Creatine Phosphate system correct answer: Small amounts of CP are stored within each cell. Simple one-to-one trade off that allows for the rapid production of ATP. ONLY for use during short bouts of exercise. less that 10 seconds. Anaerobic glycolysis correct answer: No oxygen required. NExt most immediate energy source. break down carbs (glucose or glycogen) into pyruvate. Used during medium-duration exercise. no more than about 90 seconds. Aerobic glycolysis (oxidative system) correct answer: Oxygen dependent. As exercise intensity decreases allowing for longer duration activities, use of the oxidative system increases. (Krebs cycle and ETC). Produce ATP in the mitochondria of the cell--requires oxygen. Lasts longer than 1-2 minutes. What is VO2? correct answer: The volume of oxygen the body consumes. VO2 max is the highest volume of oxygen the body can consume. Define Stroke Volume correct answer: the volume of blood the heart ejects with each beat. How does SV increase with workload? correct answer: Similar to HR, it increases as workload increases but only up to ~40% to 60% of VO2max. The percentages can be decreases in sedentary individuals and increased with training. What happens to resting HR as stroke volume increases? correct answer: it decreases, as more blood being pumped per beat allows the heart to beat less often. What is cardiac output? correct answer: a measure of blood pumped per minute. The product of stroke volume and heart rate.